The problem with the team is too many players lose the ball cheaply, and there's no width, the former, the onus is on the players, and something that can't be blamed on the manager, also alot of players attitude is absolutely wrong, and take for granted, the value of time, and how easy it is for another year to go by, and win no silverware or league title, 'they lack that will to win', and lack pride for the shirt. For all Mourinho's faults, what drives him more than anything is that will to win.
I do wonder if Sanchez was a mourinho signing, looking at history, Mourinho has always had disdain for players who loose the ball so easily. Sanchez's wages, over the duration of his contract, would equate to Peresic's transfer fee and wages.
People underestimate the value of attitude and hard work, if Martial and Rashford, can not oust an un performing Sanchez and a below par Linguard, then the team has some serious problems. If this was the armed forces, i would not expect my lieutenant, to be dragging me by his coat tails.